Herniated nucleus pulposus (HNP), also referred to as a herniated disc, is a common spine pathology that occurs approximately 95% of the time at the L4-L5 or L5 ... midline lumbar HNPs may suffer ...

The lumbar spine is comprised of five vertebrae—designated as L1 to L5—as well as five vertebral discs, and five pairs of spinal nerve roots servicing the pelvis, groin, genital area ...